Honda Civic Owners Manual: To Set the Vehicle Speed

Take your foot off the pedal and press the -/SET button when you reach the
desired
speed.

The moment you release the -/SET button, the set speed is fixed, and cruise
control
begins. The CRUISE CONTROL indicator comes on.

During cruise control, Straight Driving Assist Function is activated. This
control
function is an EPS function and it helps reduce the steering effort to keep the
steering angle on a straight road with cants.